These resources do an excellent job of advocating for the arts and creativity in the classroom in under 5 pages (or 20 minutes).
By Ping-Yun Sun
3-page summary of research studies that have looked at using drama in the classroom to promote literacy. Excellent tasting of larger research studies.
By Valerie Strauss
Washington Post article highlighting 10 skills students learn from the arts.
Sir Ken Robinson talks about the importance of creativity in education, and calls for creating an education system that nurtures creativity.
A report that succinctly and visually summarizes the significant findings from a larger compendium commissioned by The Arts Education Partnership which received finanicial support from the US Dept of ED and the National Endowment for the Arts. Larger compendium is located in Full Meals section.